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https://issues.apache.org/jira/browse/LUCENE-8425?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16555299#comment-16555299
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Adrien Grand commented on LUCENE-8425:
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+1 thanks!
> Expose hard live docs on SegmentReader level
> ---------------------------------------------
>
> Key: LUCENE-8425
> URL: https://issues.apache.org/jira/browse/LUCENE-8425
> Project: Lucene - Core
> Issue Type: Improvement
> Affects Versions: master (8.0), 7.5
> Reporter: Simon Willnauer
> Priority: Major
> Fix For: master (8.0), 7.5
>
> Attachments: LUCENE-8425.patch, LUCENE-8425.patch
>
>
> Today if soft deletes are used we expose a union of hard and soft deletes
> via LeafReader#getLiveDocs. Yet, if a users wants to take advantage of
> searching also soft-deleted documents the only option today is to search
> all documents even though some of them are hard deleted. The
> recommendation
> is to not mix those but in exceptional cases ie. when a document hits a
> non-aborting exception during indexing the document is marked as hard
> deleted which is the correct action. In order to filter those out having
> access to the hard live docs on the segment reader level allows to filter
> out
> these documents.
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